Ergothioneine exists as a natural antioxidant which occurs in mushrooms and specific food sources to defend against oxidative stress. The combination of aging with neurologic disease leads to progressive deterioration of cognitive abilities which affects memory performance and attention span and focus abilities. Scientific studies show that ergothioneine acts as a neuroprotectant by blocking the damaging effects of oxidative stress on neurons while enhancing neuronal function. The study investigates ergothioneine supplements and how they may benefit brain health wellness, with emphasis on its relevance in ergothioneine supplementation, ergothioneine cognitive function, and its potential as an ergothioneine biomarker for cognitive performance and its relevance to nutraceutical product development and nutraceutical science and innovation.
Clinical Study Shows Probiotic Blend Gut Health Enhancement and Probiotics Mood Improvement in Older Adults
Research shows gut health affects senior emotional wellness because aging reduces beneficial gut bacteria which causes digestive problems and stress escalation. The gut-brain axis links the digestive system and brain, impacting mood and immunity. Probiotics may help restore gut health, strengthen bowel function, and enhance mental health in older adults, as other investigators have studied specific probiotic blend gut health for aging populations. Beyond gut benefits, probiotics for older adults have been shown to improve brain functioning. [1]
As interest grows in science-driven solutions, these findings are increasingly used in nutraceutical product development and dietary supplement development, especially for senior-focused formulations backed by evidence-based research.
Role of Probiotics and Diet in Gut–Brain Health
Gut Microbiota and Brain Communication:
Probiotics support individuals with neurological and mood disorders by maintaining a healthy gut microbiota, which is essential for effective communication between the gut and brain. This scientific understanding often informs custom supplement formulation aimed at mood and cognitive support.
Impact of Microbiota Imbalance:
Disruption in gut microbiota balance can contribute to cognitive impairments and psychiatric symptoms.
Beneficial Probiotic Strains:
Specific strains like Lactobacillus and Bifidobacterium can:
- Improve intestinal permeability, crucial for blood-brain barrier function
- Increase brain-derived neurotrophic factor (BDNF)
- Promote neurogenesis (the formation of new neurons)
These effects are frequently studied in clinical trial support nutraceuticals, especially for mental wellness supplements.
Factors Influencing Effectiveness:
The benefits depend on:
- Probiotic strain used
- Dosage
- Duration of treatment
- Individual’s mental and physical health status
Synergistic Effects with Nutrition:
Combining probiotic supplementation with proper nutrition can further enhance mental and emotional well-being. [2]
Stress Relief and Better Bowel Health Through Prebiotics and Probiotics
Emerging prebiotics research combined with probiotic blend gut health shows decreased stress and improved bowel function through microbiome balance. Stress, coupled with gut permeability and/or microbial imbalance, can incite inflammation and alter brain pathways for mood disorder development. Probiotics may stimulate tryptophan bioavailability and therefore accentuate serotonin levels to heal the gut and restore balance to the immune system —an important pathway evaluated in nutraceutical product development for mood and gut-brain health. [3]
Re-establishing the microbiome may reduce symptoms of constipation, anxiety and depression which clearly imply a gut bacteria and mental and digestive health. [4]
Study Summary Table: Effects of L. plantarum KABP031 + KABP032 in Older Adults[5]
Category | Details |
Study Objective | Evaluate the effects of Lactiplantibacillus plantarum KABP031 + KABP032 on bowel habits, GI symptoms, nutrient uptake, and mental well-being in older adults with occasional constipation. |
Study Design | Randomized, double-blind, placebo-controlled clinical trial (84 days). |
Participants | Adults aged 50–85 years with infrequent bowel movements, hard stools, and straining. |
Groups | Probiotic: KABP031 + KABP032 blend Placebo: Identical placebo capsules |
Assessments Used | • Daily bowel habits diary • GSRS (Gastrointestinal Symptoms Rating Scale) • PSS (Perceived Stress Scale) |
Participants Screened | 187 |
Participants Enrolled | 70 |
PP (Per-Protocol) Population | 61 (50 females, 11 males); 9 excluded |
Age (Median, Range) | 58 years (50–80); no between-group differences |
Baseline Comparability | Demographics & anthropometrics similar between groups |
Body Weight Change (Day 0 → Day 84) | Probiotic: +0.84 ± 1.62 kg Placebo: +0.76 ± 2.41 kg Both increased significantly; no between-group difference |
Primary Outcomes | BM frequency, stool consistency, % hard stools (BSS ≤ 2). |
Secondary Outcomes | GI symptoms, stress levels. |
BM Frequency (Day 42) | Probiotic: Significant improvement Placebo: Minimal change p = 0.027 (95% CI: 0.22–2.39) |
Stool Consistency (Day 42) | Probiotic: Significant improvement Placebo: No meaningful change p = 0.002 (95% CI: 0.32–1.30) |
Hard Stools (BSS ≤ 2) | Probiotic: −28.6% Placebo: −3.2% p < 0.001 |
PSS Stress Change (Day 84) | Probiotic: −1.62 ± 3.97 (significant) Placebo: −0.21 ± 5.12 (not significant) |
Moderate Stress Prevalence (Day 84) | Probiotic: 9.4% Placebo: 37.9% p = 0.013 |
SF-12 Physical & Mental Scores | No significant changes in either group |
Key Conclusion | Probiotic blend significantly improved constipation, stool form, and reduced perceived stress in older adults. |
Overall Impact | Enhanced gut motility, better bowel regularity, fewer hard stools, better mental well-being. |
Bowel movements:
The Probiotic group showed a significant increase in weekly bowel movements at Day 42 (+2 BMs/week, p < 0.001) compared to the Placebo group, which had minimal increases. By Day 84, both groups improved, but the difference in results narrowed as the Placebo group reported more consistent outcomes.
Figure 2. Weekly change in bowel movements from baseline at days 42 and 84. Mean ± SEM shown; * and ** indicate significant within- and between-group differences, respectively.
Stool Consistency:
The Probiotic group demonstrated significantly improved stool consistency compared to the Placebo group at Day 42 (p = 0.002) and showed a trend towards improvement at Day 84 (p = 0.058). The Bristol Stool Scale scores of participants rose from 2.31 to 3.14 at Day 42 and to 3.05 at Day 84 (p < 0.001) which indicated their stools became softer and more regular. The Placebo group maintained their stool characteristics without any significant changes. The Probiotic treatment resulted in a substantial decrease of hard stools (BSS ≤ 2) during Day 42 when compared to the placebo group (p < 0.001)
Figure 3. Change in stool consistency: (A) Bristol Stool Scale (BSS) scores; (B) % of bowel movements with BSS ≤ 2 at days 42 and 84. Mean ± SEM; * and ** indicate significant within- and between-group differences; − shows between-group comparison.
Perceived stress and quality of life:
The Probiotic group experienced a statistically significant decrease in their perceived stress levels (PSS −1.62, p = 0.048) throughout the 84-day period but the Placebo group maintained their stress levels. At Day 84, there were fewer respondents in the probiotic group reporting moderate stress (9.4% versus placebo of 37.9%, p = 0.013). Both groups had unchanged SF-12 physical and mental health scores.
Figure 4. Change in perceived stress scale (PSS) score at day 84. Mean ± SEM; * indicates significant within-group difference.
Product examples:
Product Name: Adult’s Probiotic
Product Form: Capsule form
Benefits: improve gut health and mood enhanced for older adults
- Age: Designed for older adults aged 50+
- The product contains 10 billion viable cells per capsule at the expiration date (17 billion viable cells at manufacturing time)
- Gluten-Free + Vegetarian + Science-Based + RAW
Conclusion:
The clinical trial demonstrates that the Lactiplantibacillus plantarum KABP031 + KABP032 probiotic blend gut health formulation significantly enhances bowel movement frequency, stool consistency, and stress reduction in older adults with occasional constipation. These Probiotics improve gut motility, lower inflammation, support serotonin pathways, and strengthen the gut–brain axis—key factors in probiotics mood improvement. Combined with prebiotics and a healthy diet, they promote balanced Gut microbiota, digestive comfort, and emotional resilience, especially in probiotics for older adults.
Food Research Lab provides end-to-end R&D services through nutraceutical product development, dietary supplement development, custom supplement formulation, and clinical trial support nutraceuticals. Their advanced infrastructure supports capsule, beverage, and functional food innovation. FRL helps brands deliver safe, effective, and compliant probiotic solutions targeting gut health, mood wellness, and senior-specific needs.
Reference:
- Harvard Health Publishing. (2019, June 7). Probiotics may help boost mood and cognitive function. Harvard Health. https://www.health.harvard.edu/mind-and-mood/probiotics-may-help-boost-mood-and-cognitive-functionharvard
- Thangaleela, S., et al. (2022). Role of probiotics and diet in the management of neurological diseases and mood states: A review. Frontiers in Nutrition. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9696277/ncbi.nlm.nih
- Bistas, K. G., & Tabet, J. P. (2023). The benefits of prebiotics and probiotics on mental health. Cureus, 15(8), e43217. https://doi.org/10.7759/cureus.43217ncbi.nlm.nih
- Author(s). (2024). Effects of probiotic supplementation on depressive symptoms, sleep quality, and modulation of gut microbiota and inflammatory biomarkers: A randomized controlled trial. Brain Sciences, 15(7), 761. https://doi.org/10.3390/brainsci15070761mybib
- Authors not explicitly listed in search results. (2025). Efficacy of probiotic supplementation with Lactiplantibacillus plantarum strains on gastrointestinal tract function – A randomized controlled trial. Journal of Probiotics & Health, advance online publication. https://doi.org/10.1080/19390211.2025.2507610ncbi.nlm.nih+1
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